SRR0735A-331M Inductors, Coils, Chokes

DC Resistance (DCR):	2 Ohm Max
Height - Seated (Max):	0.146" (3.70mm)
Size / Dimension:	0.287" L x 0.287" W (7.30mm x 7.30mm)
Supplier Device Package:	--
Package / Case:	Nonstandard
Mounting Type:	Surface Mount
Inductance Frequency - Test:	1kHz
Operating Temperature:	-40°C ~ 125°C
Ratings:	AEC-Q200
Frequency - Self Resonant:	--
Q @ Freq:	--
Series:	SRR0735A
Shielding:	Shielded
Current - Saturation:	330mA
Current Rating:	330mA
Tolerance:	±20%
Inductance:	330µH
Material - Core:	Ferrite
Type:	Wirewound
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

Fixed inductors are basic electronic components in electronic circuits, and have wide applications, such as in DC-DC converters, motor drives, low-frequency analog circuits, and EMI filters. As one of the major inductors in the market, SRR0735A-331M is an important product in this segment. This article will mainly discuss the application field and working principle for the product.

Application Field

SRR0735A-331M is an ideal choice for use in automotive electronics, telecom power supplies, and alternative energy applications. Such inductors are commonly used in switch mode power supplies (SMPS), DC-DC converters, filters, and various other applications. The advanced technology used in this product allows it to handle high current without saturation. Thus, it will work great in high-current or high-temperature applications, such as vehicle engines or external voltage regulators. With specular gray epoxy overcoat, this inductor offers excellent anti-humidity and moisture-resistant performance, making it suitable for outdoor or cellular applications.

Working Principle

The SRR0735A-331M is a shielded axial inductor, featuring a high-permeability ferrite core encapsulated in a metal shell. The shell is protected by a silicone rubber overcoat, which provides excellent humidity resistance. The inductor consists of a coil of wire wound around a core, such as a ferromagnetic material, often made from ferrite. This coil has two terminals, one of which is connected to an external DC source and the other to a load. When the external DC source is connected to the inductor, it induces a magnetic field in the wire which in turn induces an electric current in the wire. This current is called the “in-rush current”, which is defined as the maximum current supplied to the inductor. The current is then converted into a magnetic field which is then confined to the core, resulting in an increase in the inductance value. This inductance value is maintained as long as the current is kept within the specified limit.The SRR0735A-331M is also designed to provide excellent power efficiency and EMI performance. It features low losses at high resonance frequencies and low distortion of the power waveform. Additionally, this inductor dissipates very low heat, owing to its high-permeability core and efficient internal construction.

Conclusion

In conclusion, SRR0735A-331M is a high performance fixed inductor which is ideal for automotive, telecom, and alternative energy applications. It offers efficient power efficiency, EMI performance, and high current capacity without saturation. Furthermore, its advanced shielded construction provides excellent humidity resistance, making it suitable for outdoor and cellular applications.

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